Padlock.



j. SCHECHTER.

PADLOCK.

APPLIcATloN r|LED1uLYl8.1911.

1,256,168. l Patented Feb. 12, 1918.

f E; E

WITNESSES: MM2

WTED STATES PATENT @FFll'CE K JOSEPH SCHECHIER, OF NEW' YORK, N. Y.

PADLOCK.

Application filed July 18, .1917.

To all /wLo/n it may concer/L.'

Be it known that l, .losnrir Soi-moi-rrnn, a subject ot' the Emperor ot Germany, residing at New York, in the county ot' New Yorkanfl State et New York, have invented certain new and useful improvements in Padlocks; and i do hereby declare the iollowing to be a full, clear, and exact description oi the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to characters otl reference marked thereon, which form a part ot this specification.

My present invention relates, generally, to improvements in locks; and the invention has reference, more particularly, to a novel construction of paddock.

The invention has tor its principal object to provide a novel construction of pin tumbler pad-lock having novel means for locking both legs ot the shackle; and the invention has tor a iinrther object a novel arrangement and nie-ans tor assembling the lock-mechanism within the body ot the lock, so that the lock-mechanism is rendered altogether inaccessible except to the proper key, when the paddock in use, and little liable to separation from the body of the lock by means oit tools, picks or linstruments other than the proper key.

.i further object oi the present invention is to provide a novel means tor locking both legs ot a sliding shackle both against withdrawal, a nd against longitudinal twisting or rotary movement in the event the shackle was cnt through.

A still further object of the present invention is t-o provide a novel vertical arrangement ot pin tnmblcrs adapted to be operated or controlled by a flat key coacting endwise with said pin tumblers.

Other objects of my present invention, not at this time more particularly enumerated, will be clearly understood from the following detailed description of the same.

l.lViththe various objects of my present invention in view, the same consists, primarily, in the novel pin tumbler pad-lock ot' the sliding shackle type hereinafter set forth; and the invention consists, furthermore, in the novel arrangements and combinations Vot the various devices and parts, as well as in the details o t the construction of said devices and parts, all of which will Specification of Letters Patent.

Patented Feb. 12, 1918.

Serial No. 181,203.

be more fully described in the following specification, and then iinally embodied in the claims appended thereto.

The invention is clearly illustrated in the accompanying drawings, in which z* Figure 1 is a sectional view illustrating the novel arrangements and combinations ot' the interior lock-mechanism of a padlock made according to and embodying the principles oit my present invention; Fig. 2 is a transverse vertical section of the same, taken on line in said Fig. 1, looking in the direction of the arrow ai; Fig. 3 is a horizontal section looking` downward on line 3 3 in said Fig. l; Fig. l is a horizontal section looking downward on line 4-4 in said Fig. l; Fig. 5 is also a horizontal section looking downward on line 5-5 in said Fig. 1; Fig. 6 is a transverse vertical section, taken on line t-G in said Fig. 1 look` ing in the direction ot the arrow ai; and Fig. 7 a detail horizontal section looking downward on line --7 in Fig. l.

Similar characters ot reference are employed in all ot the hereinabove described views to indicate corresponding parts.

`Referring now to said drawings the rei'- erencc character 1 indicates the body member of my novel lock. This body member 1 is made oi a solid block ot' metal, and is provided with a centrally and vertically disposed cylindrical bore or seat 2 for the reception and support ot' the novel pin-lock mechanism hereinafter described. Frovidcd in the upper portion ol said body l, so as to extend inwardly thereinto troni ont` side o't said body l, is a transverse opening 3, which crosses over the upper end of said bore or seat 2. Said opening 3 is provided at its outer end with a downwardly enlarged portion l. Located in the opposite side of said body 1 is a vertical shackle receiving opening 5, with which the inner end of said transverse opening 3 connnunicatcs. Provided in the top end wall ot' said body 1 is a hatch opening 6 which is alined over the said bore or seat 2. Provided in the bottom wall ot said body 1 bcneath said bore or seat 2 is an opening 7 ot reduced diameter which provides an inwardly extending annular flange 8 adapted to serve as a key-ward. The key slot or opening crosses said opening 7 and the keyward S diametrically.

The reference character 0 indicates a vertically rotatable key-plug which is adapted to be inserted through said hatch 6 and received within said bore or seat 2. Connected with the lower end of said key-plug is an extension 10 of reduced diameter' which is rece' fed in said opening 7. Located in said bore or seat 2 above said key-plug 9 is a collar 11 for retaining said key-plug against vertical movement. ordisplacement. Said collar 11 is itself retained in fixed position by means of a set-screw 12 which passes transversely through the shoulder 13, formed at the juncture of said transverse opening 3 and its downwardly enlarged portion Ll, and which engages the side of said collar. Formed in the lower end of said lreyplug 9, so as to dianietrically cross the same, is a key-slot 14. Said key-plug 9 is provided with a plurality of vertically disposed longitudinally movable lifting pins, comprising, preferably the pins a, o, c, and d, all of varying length. Said lifting pins are so arranged or disposed that the outer pins a and Z are diametrically opposite and alined with the key-slot 14, while the inner pins and c are olf-set to one side on a semi-circular line concentric 'to the of said key-plug. By reason of this positioning, the pins a and (Z may be directly engaged at their lower ends by a key inserted within said hey-slot lll, but the pins and c being out of alinenient with the ke] cannot be so engaged, consequently the latter are lprov`ded with laterally extending arms 15 which ride in vertical transverse slots 16 crossing said hey-slot 1-1 at right angles, so that a lrey inserted in said heyslot 11i would engage said arms 15 with a lifting movement which would be thereupon transmitted to said pins and c. rlhis arrangement of the lifting pins not only pi ovides for a proper distancing of the same one from the other, but also leaves the axial central portion of tie key-plug unobstructed so that room for mechanism to be operated by said key-plug may be provided for, as will presently appear. Said collar l1 .is provided with a set of vertical spring-pressed lockpins 17 of varying lengths, and respectively positioned eoncentrically about the axis of said collar and lreyalug so as to aline themselves with the several lifting pins a, o, c and CZ. AExtending downwardly in axial alinement through said collar 11 is a stem 13, adapted to rotate within said collar 11, the lower end of which is received in the upper end of said key-plug and coupled therewith, so as to be turned by the rotation of said key-plug, by means of a coupling-pin 19 passed mutually through said key-plug and stem. Connected with the upper end of said stem. above and exterior of said collar 11. is a cross-head 20.

The reference character 21 indicates a bolt-barrel which is inserted laterally into said transverse opening 3 above said keyplug mechanisma Said bolt-barrel is pronasales vided at its outer end with a downward extension 22, which seats itself within said downward extension 4E of the opening 3,. Extending downwardly into said extension 22 of said bolt-barrel is a shackle receiving opening 23, and the top wall of said body 1 is provided with a shackle passage 24 which is alined in communication with said receiving opening 23. Said bolt-barrel 21 is secured against removal from said body 1 by means of a loch-screw 25 which extends downwardly through the bottom of Said shackle receiving opening 23 so as to screw into said body l. Extending longitudinally through said bolt-barrel 21, from its inner end, is a guideway 26, which communicates at one end with the shackle receiving opening 5, and at the other end with the shackle receiving opening` 23. Provided in the lower side of said bolt-barrel 21, so as to communicate with said guideway 23 is a longitudinal slot 27. Slidably disposed in one end of said guideway 2G is a bolt 28, and slidably disposed in the other end of said guideway is a bolt 29. Arranged within said guideway between said bolts is a compression spring 30 the opposite ends of which bear respectively against said bolts so as to normally project the same outwardly from the respective ends of said guideway. T he under side of said bolt-barrel 21 is cutaway to provide a slid way 31, and secured to the under side of said bolt-barrel 21, beneath said slideway, by any suitable means is a supporting plate 32. Slidably disposed in one end of said slideway 31, upon said supporting plate 32, is a tumbler 33 having at its inner end a downwardly turned lug 3st, which rides in a cutaway portion 35 formed in one side marginal edge of said supporting plate 32, and which projects downwardly beneath said supporting plate, and within the path of movement of one end of said cross-head 20. Extending upwardly from the outer end of said tumbler 33 is a coupling-post 36, the same extending through said slot 27 and through the inner end of said bolt 23, to operatively couple the latter with said tumbler Slidably disposed in the opposite end of said slideway 31, upon said supporting-plate 32, is a tumbler 37 having at its inner end a downwardly turned lug 3S, which rides in a cutaway portion 39 formed in the opposite side marginal edge of said supporting plate 32, and which projects downwardly beneath said supporting-plate, and within the path of movement of the opposite end of said cross head 20. Extending upwardly from the outer end of said tumbler 37 is a coupling post 40, the saine extending through said slot 27 and through tie inner end of said bolt 29, to operatively couple the latter with said tumbler 37 'll-he reference character 4:1 indicates a shackle, the lower end of the .heel or long end 42 ot' the same being `rece-i Yable in said shackle receiving` opening 5. The extremity 43 oi said heel 42 is reduced in diameter to r engage a compression spring`44 seated in the bottom of said receiving opening 5, by the operation of which said shackle is projected upwardly to released position when the mechanism is unlocked. Said heel 42 is recessed longitudinally as at 45 to provide a shoulder 46 at the lower end thereof adapted to engage a stop tongue 47 formed by the inner end of said supporting plate 32, to retain the shackle against entire escape from said body l. Alined with said shoulder is an annular groove 48, which when registered opposite said stop-tongue 47 permits the shackle to swivel relative to said body 1` when the former has moved to releasedposition. The upper end of said recessed portion 45 is chamfered as at 49, to permit the same to 'engage said bolt 28 and press back the same, when said shackle is pushed downward into locked position. The toe or short end 51') of said shackle is receivable in said shackle receiving yopening 23, and the same is provided with a chamfered nosing 51 adapted to engage said bolt 29` and press back the same, when said shackle is pushed downward into locked position. Said heel 42 is provided with a bolt receiving socket 52 extending transversely thereinto, and adapted to receive said bolt 28 when said shackle is pushed home, and said toe 50 is provided with a similar bolt receiving socket 53 extending transversely thercinto, and adapted to rreceive said bolt 29 when said shackle is pushed home, thereby assuring a secure locking of each leg of the shackle against withdrawal from the body l. Since the bolts enter said transverse sockets 52 and 53 so as to be surrounded thereby, it will be apparent, that they not only hold said shackle legs against longitudinal movement, but also against rotating or swiveling movement7 consequently if the exposed portion oi the shackle should even be sawed or cut through the legs of the shackle could not be turned or swiveled to permit the separation of the sawedor cut ends, and the consequent removal of the lock from locking relation to such ldevices as it may be connected with, thereby rendering the surreptitious removal of the pad-lock additionally di'licult.

The hatch opening' G may be permanently closed` after the key-plug mechanism is inserted within the body l, by means of a closing plug 54, which is preferably soldered into closing position.

The reference character 55 indicates a key for operating the pin-lock mechanism. The

said key is vflat, and possesses kat its free end a series of lifting-pin engaging Apoints 56,. so positioned andy relatively distanced, that upen'insertion in the key-slot. 14 the saine engage the lifting-,pins directly or through the medium of the arms 15, to lift the pins to force upward the lock-pins 17 t0 register their ends with the line of division between the key-plug 9 and collar 11, so that the former may he rotated by the key. Then the key 55 is thus operatively related to the keyplug, and the latter is rotated thereby, its rotation is transmitted to said stem 1.8 and the cross head 20, the latter being turned about the axis of the key-plug. In so turn ing one end of said cross head 2O engages the lug 34 of the tumbler 33 causing the latter to slide inwardly, while the opposite end of said cross head 2O enga ges the lug 3G of the tumbler 37, causing the same to slide inwardly. This inward movement ot' said tumblers and 37 is transmitted to said bolts 28 and 29, so that the latter are respectively retracted from their respective sockets in the legs of the shackle, against the compression of the spring 30. The shackle being thus freed from the restraining influence of said bolts 28 and 29, is free to be impelled upward by the spring 44, so that its toe 50 is freed from the receiving opening and then rotated upon its heel 42, thus causing the same to assume its unlocked position.

In order to compel the operator to return the key-plu g and cross head to normal initial position, the key is provided with ward notches 57, which straddle the key wards 8, and not only determine the proper limit ot the key insertion within the key-plug S), but also prevent the key from being withdrawn until the same has been turned back to normal initial position, which also positions said key-plug 9 and cross head 20 in normal initial positions, so that the lifting pins and lock-pins are alinet, and the latter can desccnd into the key-plug when the key is withdrawn to again lock the key-plug and cross head against turning.

In order to prevent the key-plug and cross head from being turned in the wrong direction said supporting-plate 32 is provided with a guarding stop-lug 58, the saine depending froni the under side oit' said supporting-plate 32, in front of one end of said cross-head, so as to obstruct any rotation of: the latter in al direction toward said stoL lug, and only permitting the saine to be rotated in a proper direction to operatively move said tumblers 83 and 37, and conscquently the iolts 28 and 29.

As will be apparent from the `above description, and an inspection of the accent panying drawings, the key-plug 9 and collar ll being once in position and the bolt-barrel 21 inserted in place, and fastened with the screw 25, and then the shackle pushed heine to locked position, so as to prevent access to said screw 25, the interior mechanism of the lock vis inaccessibly embedded in the solid one, piece bodyl, and is consequently absolutely guarded against operation or tani-A pering with, except by a. proper key. The mechanism is therefore retained in assembled relation by means absolutely inaccessible when the lock is locked, no cross pins vor other removable parts having surfaces exposed anywhere about the exterior surface of the body l, so as to be accessible, are used.

1 am aware that some changes may be made in the various arrangements and combinations of the several devices and parts, as well as in the details of the construction thereof, without departing from the scope of my present invention as set forth in the foregoing specification, and as defined in the appended claims. Hence, I do not limit my invention to the exact arrangements and combinations of the'said devices and parts as described in the foregoing specification, nor do 1 coniine myself to the exact details of the construction of said parts as illustrated in the accompanying drawings.

1 claim l. T he combination with an integral body member having a shackle receiving` opening, a centrally located vertical bore, and a transverse opening extending inwardly from one side so as to cross said bore at its upper end and communicate with said shackle receiving opening, of a rotatable key-plug mechanism located in said bore having vertical pin-lock devices, a bolt-barrel extending through said transverse opening, said boltbarrel having a shackle receiving opening at its outer end, a fastening means at the bottom of said shackle receiving opening of said bolt-barrel adapted to be engaged with said body member to prevent withdrawal of said bolt-barrel, said body member having an opening in its top wall communicating with said shackle receiving opening of said bolt barrel, aA shackle the legs of which are respectively received in said respective shackle receiving openings, bolt mechanism carried by said bolt barrel adapted to engage each shackle leg, means operated by said key-plug for actuating said bolt mechanism, and said body member having a keyslot in its bottom wall for the entrance of a key into said key-plug.

2. rIhe combination with an integral body member having a shackle receiving opening, a centrally located vertical bore provided with a bottom opening` of reduced diameter forming a ward flange having a diametrically extending key slot, and a transverse opening extending inwardly from one side so as to cross said bore at its upper end and communicate with said shackle receiving opening, said transverse opening having a downward vertical extension at its outer end, of a rotatable key-plug mechanism located in said bore having vertical pin-lock devices, a bolt-barrel having a depending ex- :essaiesY tension at its outer end located in said transverse opening and its downward vertical extension, a vertical shackle receiving opening extending downwardly into said depending extension of said bolt-barrel, a fastening means at the bottom of said last mentioned shackle receiving opening engaged with said body member, said body member having an opening in its top wall communicating with said last mentioned shackle receiving opening, a shackle the legs of which are respectively received in said respective shackle receiving` openings, bolt mechanism carried by said bolt-barrel adapted to engage each shackle leg, and means operated by said keyplugl mechanism for actuating said boltmechanism.

3. 1n a pad-lock, the combination with a shackle of a body-member having an opening to receive the heel of said shackle, a boltbarrel extending transversely through the upper portion of said body-member and provided with an opening to receive the toe of said shackle, oppositely directed bolts slidably disposed in said bolt-barrel, a compression spring between said bolts to project the same outward in opposite directions, tumblers slidably related to the bottom of said bolt-barrel, means interconnecting said tumblers respectively` with said bolts, a vertical pin-lock key-plug mechanism in said body-member, means actuated by said keyplug mechanism for operating said tumblers to retract said bolts, and each shackle leg having transverse receiving sockets for the reception of said bolts.

4. In a pad-lock, the combination with a shackle of a body-member having an opening to receive the heel of said shackle, a

bolt-barrel extending transversely through the upper portion of said body-member and provided with an opening to receive the toe of said. shackle, oppositely directed bolts slidably disposed in said bolt-barrel, a compression spring between said bolts to project the same outward in opposite directions, tumblers slidably related to the bottom of said bolt-barrel, means interconnecting said tumblers respectively with said bolts, a vertical pin-lock key-plug mechanism in said body-member, means actuated by said keyplug mechanism for operating said tumblers to retract said bolts, each shackle leg having transverse receiving sockets for the reception of said bolts, spring means engaging the shackle heel to project said shackle upward to released position, and means connected with said bolt-barrel for limiting the upward movement of said shackle.

5. In a pad-lock, the combination with a shackle of a body member having an opening to receive the heel of said shackle, a bolt-barrel extending transversely through the upper portion of said body-member and provided with an opening to receive the toeofsaid shackle, oppositely directed bolts slidably disposed in said bolt-barrel, a compression spring between said bolts to project the salme outward in opposite directions, a supporting plate secured to the under side of said bolt-barrel and spaced therefrom to provide a slideway, tumblers slidably disposed in said slideway, upwardly extending coupling posts connected respectively with said tumblers, the same extending upwardly through said bolts, downwardly turned lugs connected withthe inner ends of said tumblers, a vertical pin-leek key-plug mechanism in said body-member, means actuated by said key-plug mechanism for engaging said lugs to operate said tumblers and retract said bolts, each shackle leg having a transverse receiving socket for the reception of one of said bolts.

6. In a pad-lock, the combination with a shackle of a body member having an opening to receive the heel of said shackle, a bolt-barrel extending transversely through the upper portion of said body-member and provided with an opening to receive the toe of said shackle, oppositely directed bolts slidably disposed in said bolt-barrel, a compression spring between said bolts to project the same outward in opposite directions, a supporting plate secured to the under side of said bolt-barrel and spaced therefrom to provide a slideway, tumblers slidably disposed in said slideway, upwardly extending coupling posts connected respec- Lively with said tumblers, the same extending upwardly through said bolts, downwardly turned lugs connected with the` inner ends 'of said tumblers, a Vertical pin-lock key-plug mechanism in said body-member, means actuated by said key-plug mechanism for engaging said lugs to operate said tumblers and retract said bolts, each shackle leg having a transverse receiving socket for the reception of one ot said bolts, spring means engaging the shackle heel to project said shackle upward to released position, said heel of said shackle having a vertical cutaway portion on its under side, a stoptongue connected with said supporting plate adapted to ride in said cutaway portion, and

said -heel of said shackle having an annular groove at the bottom of said cutaway portion adapted to ride over said stop-tongue to permit the swiveling of said shackle when released.

7. In a pad-lock, the combination with a body-member having a central vertical bore provided with a bottom opening ot' reduced diameter forming a ward flange having a diametrically extending key-slot, of a rotatable key-plug in the lower end of said bore, a xed collar above said key-plug, a stem secured to the upper end ofsai'd keyplug so as to extend axially through said collar, a cross head connected with the upper end ot said stem, said key-plug having a diametrically disposed vertical key-way normally registered with said key-slot, a plurality ot vertical. lifting-pins disposed in concentric disposition about the axis of said key-plug, the end lifting-pins being alined with said key-way, so as to be engaged by a key inserted therein, said key-plug having transverse slots crossing said key-way, the intermediate lifting-pins having horizontally extending arms adapted to cross said key-way and ride in said slots so as to be engaged by a key inserted in said key-way, a plurality of spring-pressed lock-pins mounted in said collar in respective vertical alinement with said lifting-pins, a shackle associated with said body-member, a bolt mechanism for engaging the legs of said shackle, and means actuated by the rotation ot' said cross-head for disengaging said bolt mechanism from said shackle.

8. In a pad-lock, the combination with a body-member having a central verticalbore provided with a bottom opening o reduced diameter forming a ward flangehaving adiametrically extending key-slot7 of a rotatable key-plug in the lower end 'ot said bore, a fixed collar above said key-plug, a stem secured to the upper end of said keyplug so as to extend axially through said collar, a cross head connected with the upper end of said stem, Kaid key-plug having a diametrically disposed vertical key-way normally registered with said key-slot, a plurality of vertical lifting-pins disposed in concentric disposition about the axis ofl said key-plug, the end lifting-pins being alined with said key-way so as tobe engaged by a key inserted therein, said key-plug having transverse slots crossing said key-way, the intermediate lifting-pins having horizontally extending arms adapted to cross said key-way and ride in said slots so asto be engaged by a key inserted in said keyway, a plurality of spring-pressed lock-pins mounted in said collar in respective vertical alinement with said lifting-pins, a shackle, said body member having an opening to receive the heel of said shackle, a bolt-.barrel extending transversely through the upper portion of said body-member above said cross-head and provided with an opening to receive the toe of said shackle, oppositely directed bolts mounted in said bolt-barrel, a compression spring between said bolts for projecting the same, tumblers slidably related to the bottom of said bolt-barrel, means respectively connecting said tumblers with said bolts, and downwardly projecting lugs connected respectively with said tumblers and positioned to be respectively engaged by the ends of said cross--headto be retracted by the rotation of the latter, cach shackle leg having transverse bolt receiving sockets, and a stopmeans for limiting the rotation of said cross-head to a proper direction.

9. In a pad-lock, the combination with a body-member having a central vertical bore provided with a bottom opening of reduced diameter 'forming a ward flange having a diametrically extending key-slot, of a rotatable key-plug in the lower end of said bore, a fixed collar above said key-plug, a stem secured to the upper end oi' said keyplug so as to extend axially through said collar, a cross head connected with the upper 'end oi' said stem, said key-plug having a dianietrically disposed vertical key-.way normally registered with said key-slot, a plurality of vertical lifting-pins disposed in concentric disposition about the axis oi said key-plug, the end lifting-pins being alined with said key-way, so as to be engaged by a key inserted therein, said key-plug having transverse slots crossing said key-way. the intermediate lifting-pins having horizontally extending arms adapted to cross said key-way and ride in said slots so as to be engaged by a key inserted in said key-way, a plurality of spring -pressed lock-pins mounted in said collar in respective vertical alinement with said lifting-pins, a shackle, said body member having an opening to receive the heel of said shackle, a bolt-barrel `extending Vtransversely through the upper portion of said body-member above said cross-head and provided with an opening to receive the toel of said shackle, oppositely directed bolts mounted in said bolt-barrel, a compression spring between said bolts for projecting the same outward, tumblers slidably related to the bottom of said bolt-barrel, means respectively connecting said tumblers with said bolts, and downwardly projecting lugs connected respectively with said tumblers and positioned to be respectively engaged by the ends of said cross-head to be retracted by the rotation of the latter, each shackle leg having transverse bolt receiving sockets, a stop means for limiting the rotation of said-cross-head to a proper direction, spring means engaging the shackle heel to project said shackle upward to released position, and means connected with said bolt-barrel for limiting the upward movement of said shackle.

l0. In a pad-lock, the combination with a body-member having a central' vertical bore provided with a bottom opening of reduced diameter forming a ward flange having a diametrically extending key-slot, of a rotatable key-plug in the lower end of said bore, a fixed collar above said key-plug, a stem secured to theupper end of said keyplug so as to extend axially through said collar, a cross head connected with the upper end of said stem, said key-plug having a diamctrically disposed vertical key-way normally registered with said key-slot, a plunasales rality of vertical lifting-pins disposed in concentric disposition about the axis of said key-plug, the end lifting-pins being alined with said key-way so as to be engaged by a key inserted therein, said key-plug having transverse slots crossing said key-way, the intermediate lifting-pins having horizontally extending arms adapted to cross said key-way and ride in said slots so as to be engaged by a key inserted in said key-way, a plurality of spring-pressed lock-pins mounted in said collar in respective vertical alinement with said lifting-pins, a shackle, said body member having an opening to receive the heel of said shackle, a bolt-barrel extending transversely through theV upper portion oi said body-member above said cross-head and provided with an opening 'to receive the toe ot said shackle, oppositely directed bolts mounted in said bolt-barrel, a compression spring between said bolts for projecting the same outward, a supporting plate secured to the underside of said boltbarrel and spaced therefrom to provide a slideway, tumblers slidably disposed in said slideway, upwardly extending couplingposts joining said tumblers respectively'to said bolts, downwardly Vturned lugs connected with the inner ends of said lugs and disposed to be engaged respectively by opposite ends of said cross-head, each shackle leg having transverse bolt-receiving sockets, and a stop-means depending from said supporting plate to limit the rotation of said cross head to a proper direction.

1l. ln a pad-lock, the combination with a body-member having a central vertical bore provided with a bottom opening oit reduced diameter forming a ward flange having a diametrically extending key-slot, of a rotatable key-plug in the lower end of said bore, a lixed c'ollar above said key-plug, al stem secured to the upper end of said key-plug so as to extend axially vthrough said collar, a cross head connected with the upper end of said stein, said key-plug having a diametrically disposed vertical key-way normally registered with said key-slot, a plurality oi vertical lifting-pins disposed in concentric disposition about the axis of said key-plug, the end lifting-pins being alined with said key-way, so as to be engaged by a key inserted therein, said key-plug having transverse slots crossing said key-way the intermediate liting-pins having horizontally extending arms adapted to cross said key-way and ride in said slots so as to be engaged by a key inserted in said key-way, a plurality of spring-pressed lock-pins mounted in said collar in respective vertical alinement with said lifting-pins, a shackle, said body member having' an opening to receive the heel of said shackle, a bolt-barrel extending transversely through the upper portion of said body-member above said cross-head and provided with an opening to receive the toe of said shackle, oppositely directed bolts mounted in said bolt-barrel, a compression spring between said bolts for projecting the same outward, a supporting plate secured to the under side of said bolt-barrel and spaced therefrom to provide a slide-way, tumblers slidably disposed in said slideway, upwardly extending` coupling-posts joining said tumf;- blers respectively to said bolts, downwardly turned lugs connected with the inner ends of said lugs and disposed to be engaged respectively by opposite ends of said cross-head, each shackle leg having transverse bolt-receiving sockets, a stop-means depending from said supporting plate to limit the rotation of said cross head to a proper direction, spring means engaging the shackle heel to project said shackle upward to released position, said heel of said shackle having a ver tical cutaway portion on its inner side, a stop-tongue connected with said supporting plate adapted to ride in said cutaway portion, and said heel of said shackle having an annular groove at the bottom of said cutaway portion adapted to ride over said stoptongue to permit the swiveling of said shackle when released.

stem for actuating a lock-mechanism, said key-plug having a diametrically disposed vertical key-way, a plurality of vertical lifting-pins disposed in concentric disposition about the axis of said .key'plug, the end lifting-pins being alined with said key-Way so as to be engaged by a key inserted therein,

the intermediate lifting-pins having horizontally extending arms, said key-plug having transverse slots crossing said key-way thro-ugh which said arms ride so as to be engaged by a key inserted in said key-way, and

a plu "ality of spring-pressed lock-pins mounted in said fixed member in respective vertical alinement with said lifting-pins.

In testimony, that I claim the invention set forth above I have hereunto set my hand C this 123th day ot July, 1917.

JOSEPH SCHECHTER.

lVitnesses GEORGE l). RICHARDS, GEORGE F. BENTLEY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

